My CPU is designed for 1333 RAM, but I bought 1600 G.Skill RAM as recommended by banthracis on Tom's Hardware. I have a Gigabyte GA-870A-UD3 mother board which has these RAM specifications:
4 x 1.5V DDR3 DIMM sockets supporting up to 16 GB of system memory
Dual channel memory architecture
Support for DDR3 1866(OC)/1333/1066 MHz memory modules
(Another source for supported RAM.)
I set my RAM to 7-8-7-24-2T. I changed the voltage to 1.64v and set the clock to 1333. It's set to unganged. (The bios recommends not going above 1.64v, but the memory is meant to run at 1.65. I had it set at auto before, which the bios says might raise the voltage to match timings. This might have damaged the RAM, I suppose.)
Now my Windows 7 system is crashing whenever I do anything RAM-intensive. (Here's the most recent dump.) They're most often IRQL_NOT_LESS_OR_EQUAL errors caused by ntoskrnl.exe. The crashes been happening for a little over a month and are much more frequent now than a month ago, despite similar computer usage. (Here's a post I made earlier in which it was suggested I use these RAM timings.)
Also, I ran memtest86+. It didn't get through the first pass and stopped with this error: "Unexpected interrupt - halting."
Has my RAM gone bad? Should I buy a new pair? Should I buy a 1333 pair?
My specs are here.
Thanks for the help! Let me know if you need further information.
P.S. If I end up needing to buy new RAM, I'm looking at these:
G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-4GBRL
A-DATA XPG Gaming Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model AX3U1600GB2G9-2G
G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL9D-8GBRL